Shaft-seal water-cooling heat dissipation protecting system of centrifugal pump

Abstract

The invention relates to the technical field of centrifugal pumps, in particular to a shaft-seal water-cooling heat dissipation protecting system of a centrifugal pump. The shaft-seal water-cooling heat dissipation protecting system comprises a pump shell, an impeller shell, a pump shaft, a shaft seal and a bearing housing, wherein a cooling water feeding line is respectively connected with the inlet of a coil pipe inside the bearing housing, the inlet of a chamber at the outer end of the shaft seal and the inlet of a shell side of a heat exchanger; a cooling water return line is respectively connected with the outlet of the coil pipe, the outlet of the chamber at the outer end of the shaft seal and the outlet of the shell side of the heat exchanger. The shaft-seal water-cooling heat dissipation protecting system is reasonable in structure and easy to operate. In actual application, the shaft-seal water-cooling heat dissipation protecting system has the advantages that heat dissipation can be conducted on the shaft seal effectively, service life of a mechanical seal of a like pump is prolonged, the number of maintenance times is reduced, cooling water branches at the tail end are full of water, and stable operation of the system is guaranteed.

Description

technical field [0001] The invention relates to the technical field of centrifugal pumps, in particular to a centrifugal pump shaft seal water cooling and heat dissipation protection system. Background technique [0002] Centrifugal pumps work by using the centrifugal force generated by the water caused by the rotation of the impeller. Before starting the pump, the pump casing and the suction pipe must be filled with water, and then the motor is started to drive the impeller and the water to rotate at a high speed. The flow channel flows into the pressure water pipeline of the water pump. At present, the utilization rate of centrifugal pumps in production is extremely high, but when they are actually used in factories, some problems often occur. For example, when the shaft seal is cooled, there are often problems such as untimely and incomplete cooling, and poor selection of cooling locations. If the cooling effect is not good, it is easy to damage the friction pair betwe...

AI Technical Summary

Problems solved by technology

For example, when the shaft seal is cooled, there are often problems such as untimely and incomplete cooling, poor selection of cooling positions, etc.

If the cooling effect is not good, it is easy to damage the friction pair between the dynamic and static rings of the mechanical seal, thereby destroying the mechanical seal and causing the pump to fail to work normally.

Especially when cooling water is supplied, there is no valve to control the flow, and it is difficult to ensure sufficient supply of cooling water in the end branch. If the water level is slightly higher, the cooling water will be more difficult to reach, which will affect the cooling effect of the shaft seal.

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